Answers here
Word list at bottom of page. Note that for two-word answers spaces or hyphens are left out in criss-cross. The digit 2 indicates 2 words. Across
2. A star that has left the main sequence and is burning helium 2
8. Cool stars appear this colour
9. A red supergiant star in the constellation of Orion
10. The term for a graph on which the luminosity of stars is plotted against temperature 2
13. The temperature of a star depends on its age and its….
17. The brightness of a star
18. sequence A star that is ‘burning’ hydrogen lies on the…
19. The magnitude of a star as it appears in the night sky
22. The element stars fuse when they become red giants
24. A unit of interstellar distance, the distance light travels in one year 2
26. Stars don’t really burn, they get their energy from nuclear….
27. Very large stars can collapse into one of these after a supernova 2
28. The element stars ‘burn’ when they lie on the main sequence
29. A star that does not get hot enough to start hydrogen fusion is called a …2
30. A star that has finished nuclear fusion and is radiating away gravitational energy 2 Down
1. A white dwarf will fade away and become a…2
2. Burning stars are prevented from collapsing by .........pressure
3. A dense cloud of gas that is about to ignite to become a star
4. A unit of interstellar distance, about 3.3 light years
5. The amount of light given off by a star, compared to the Sun
6. The ‘colour’ of G type stars like our Sun
7. A star made of degenerate mater after protons and electrons have combined 2
11. The colour of a star is an indication of its….
12. Gas clouds collapse to form stars because of…
14. An exploding star
15. The approximate distance to Sirius in light years
16. The force that hold protons and electrons apart in stellar cores is called electron..........pressure 20. The magnitude a star would appear to be if it were 32 light years away
21. A Red Giant star can throw off a cloud of gas which becomes a planetary…
23. The interstellar gas from which stars form is called a…2
25. The element that is formed at the core of heavy stars
27. Very hot stars can be this colour
Word list:
Absolute, Apparent, Betelgeuse, Black dwarf, Black hole, Blue, Brown dwarf, degeneracy, Eight, Fusion, Gravity, Helium, Hertzsprung-Russell, Hydrogen, Iron, Light-year, Luminosity, Magnitude, Main sequence, Mass, Molecular cloud, Nebula, Neutron star, parsec, Protostar, Radiation, Red, Red giant, Supernova, Temperature, White dwarf, Yellow
Answers here
Word list at bottom of page. Note that for two-word answers spaces or hyphens are left out in criss-cross. The digit 2 indicates 2 words.
Across
2. A star that has left the main sequence and is burning helium 2
8. Cool stars appear this colour
9. A red supergiant star in the constellation of Orion
10. The term for a graph on which the luminosity of stars is plotted against temperature 2
13. The temperature of a star depends on its age and its….
17. The brightness of a star
18. sequence A star that is ‘burning’ hydrogen lies on the…
19. The magnitude of a star as it appears in the night sky
22. The element stars fuse when they become red giants
24. A unit of interstellar distance, the distance light travels in one year 2
26. Stars don’t really burn, they get their energy from nuclear….
27. Very large stars can collapse into one of these after a supernova 2
28. The element stars ‘burn’ when they lie on the main sequence
29. A star that does not get hot enough to start hydrogen fusion is called a …2
30. A star that has finished nuclear fusion and is radiating away gravitational energy 2
Down
1. A white dwarf will fade away and become a…2
2. Burning stars are prevented from collapsing by .........pressure
3. A dense cloud of gas that is about to ignite to become a star
4. A unit of interstellar distance, about 3.3 light years
5. The amount of light given off by a star, compared to the Sun
6. The ‘colour’ of G type stars like our Sun
7. A star made of degenerate mater after protons and electrons have combined 2
11. The colour of a star is an indication of its….
12. Gas clouds collapse to form stars because of…
14. An exploding star
15. The approximate distance to Sirius in light years
16. The force that hold protons and electrons apart in stellar cores is called electron..........pressure
20. The magnitude a star would appear to be if it were 32 light years away
21. A Red Giant star can throw off a cloud of gas which becomes a planetary…
23. The interstellar gas from which stars form is called a…2
25. The element that is formed at the core of heavy stars
27. Very hot stars can be this colour
Word list:
Absolute, Apparent, Betelgeuse, Black dwarf, Black hole, Blue, Brown dwarf, degeneracy, Eight, Fusion, Gravity, Helium, Hertzsprung-Russell, Hydrogen, Iron, Light-year, Luminosity, Magnitude, Main sequence, Mass, Molecular cloud, Nebula, Neutron star, parsec, Protostar, Radiation, Red, Red giant, Supernova, Temperature, White dwarf, Yellow